Nah, you should have gotten the turn file in the email you used to send your pretender. Grab the .trn file, put it in a subdir of your Dom3/savedgames directory (I used SmokyBat for the folder name, but it may not be absolutely necessary to do so), play the turn (the game name will be the same as the folder name), end the turn, take the .2h file from that folder and sent it back to the address the .trn file came from.
Repeat every turn until you're overrun. Or win.
